<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }

        li {
            list-style: none;
        }

        img {
            display: block;
            width: 200px;
        }

        .box {
            width: 600px;
            height: 112px;
            border: 5px solid #000;
            margin: 100px auto;
            overflow: hidden;
        }

        .box ul {
            display: flex;
            animation: change 2s infinite linear;
        }

        @keyframes change {
            from {
                transform: translate(0);
            }

            to {
                transform: translate(-1400px);
            }
        }
    </style>
</head>

<body>
    <div class="box">
        <ul>
            <li><img src="./images/1.jpg" alt="" /></li>
            <li><img src="./images/2.jpg" alt="" /></li>
            <li><img src="./images/3.jpg" alt="" /></li>
            <li><img src="./images/4.jpg" alt="" /></li>
            <li><img src="./images/5.jpg" alt="" /></li>
            <li><img src="./images/6.jpg" alt="" /></li>
            <li><img src="./images/7.jpg" alt="" /></li>
            <!-- 替身：填补显示区域的露白 
            让图片的宽度 = 父盒子的宽度
            200 * 3     = 600
        -->
            <li><img src="./images/1.jpg" alt="" /></li>
            <li><img src="./images/2.jpg" alt="" /></li>
            <li><img src="./images/3.jpg" alt="" /></li>
        </ul>
    </div>
</body>

</html>